10 research outputs found

    ИсслСдованиС эстСразного статуса ΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠ° ΠΊΠ°ΠΊ комплСксного Π±ΠΈΠΎΠΌΠ°Ρ€ΠΊΠ΅Ρ€Π° воздСйствия фосфорорганичСских соСдинСний

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    Development of biomarkers of human exposures to organophosphorus compounds OPCs and their quantification is a vital component of a system of prediction and early diagnostics of OPC-induced diseases. Our study was focused on investigation of esterase status as a complex biomarker of exposure to OPCs and an aid in accurate diagnosis. We suggest that this complex biomarker should be more effective and informative than standard assays of plasma butyrylcholinesterase (BChE), erythrocyte acetylcholinesterase (RBC AChE), and lymphocyte neuropathy target esterase (NTE). It will help: 1) to assess an exposure as such and to confirm the nonexposure of individuals suspected to have been exposed; 2) to determine if the exposure was to agents expected to produce acute and/or delayed neurotoxicity; 3) to perform dosimetry of the exposure, which provides valuable information for medical treatment. To confirm this hypothesis, we have examined the changes in activity of blood AChE, NTE, BChE and carboxylesterase (CaE) 1 h after i.p. administration of increasing doses of three OPCs with different esterase profiles: the known neuropathic compound O,O-dipropyl-O-dichlorovinyl phosphate (C3H 7O)2P(O)OCH=CCl2 (diPr-DClVP) as the control compound and two model dialkylphosphates (C2H5O)2P(O)OCH(CF3)2 (diEt-PFP) and (C4H9O)2P(O)OCH(CF3)2 (diBu-PFP). The esterases assay was performed in hemolysed blood by spectrophotometric (AChE, BChE, CaE) and biosensor (NTE) methods. Analysis of the obtained dose-dependences for blood esterases inhibition showed that blood BChE and CaE were the most sensitive biomarkers, allowing detection of low doses. Inhibition of blood NTE and AChE can be used to assess the likelihood that an exposure to OPC would produce cholinergic and/or delayed neuropathic effects.Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° систСмы Π±ΠΈΠΎΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ² воздСйствия фосфорорганичСских соСдинСний (ЀОБ) Π½Π° Ρ‡Π΅Π»ΠΎΠ²Π΅ΠΊΠ° ΠΈ ΠΈΡ… количСствСнная ΠΎΡ†Π΅Π½ΠΊΠ° ΡΠ²Π»ΡΡŽΡ‚ΡΡ Π²Π°ΠΆΠ½Ρ‹ΠΌ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠΌ прСдсказания ΠΈ Ρ€Π°Π½Π½Π΅ΠΉ диагностики Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ, Π²Ρ‹Π·Ρ‹Π²Π°Π΅ΠΌΡ‹Ρ… антихолинэстСразными соСдинСниями. ЦСлью нашСй Ρ€Π°Π±ΠΎΡ‚Ρ‹ Π±Ρ‹Π»ΠΎ исслСдованиС эстСразного статуса ΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠ° ΠΊΠ°ΠΊ комплСксного Π±ΠΈΠΎΠΌΠ°Ρ€ΠΊΠ΅Ρ€Π° воздСйствия ЀОБ для диагностики воздСйствия ΠΈ ΠΏΠΎΡΠ»Π΅Π΄ΡƒΡŽΡ‰Π΅ΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ Ρ‚Π°ΠΊΠΎΠ³ΠΎ Ρ€ΠΎΠ΄Π° интоксикаций. ΠœΡ‹ ΠΏΠΎΠ»Π°Π³Π°Π΅ΠΌ, Ρ‡Ρ‚ΠΎ этот комплСксный Π±ΠΈΠΎΠΌΠ°Ρ€ΠΊΠ΅Ρ€ Π±ΡƒΠ΄Π΅Ρ‚ Π±ΠΎΠ»Π΅Π΅ эффСктивным ΠΈ ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ‚ΠΈΠ²Π½Ρ‹ΠΌ ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ со стандартным ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ΠΌ бутирилхолинэстСразы ΠΏΠ»Π°Π·ΠΌΡ‹ ΠΊΡ€ΠΎΠ²ΠΈ (Π‘Π₯Π­), ацСтилхолинэстСразы эритроцитов (АΠ₯Π­) ΠΈ нСйротоксичной эстСразы Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚ΠΎΠ² (НВЭ). Он ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ‚: 1) ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€Π΄ΠΈΡ‚ΡŒ ΠΈΠ»ΠΈ ΠΎΠΏΡ€ΠΎΠ²Π΅Ρ€Π³Π½ΡƒΡ‚ΡŒ сам Ρ„Π°ΠΊΡ‚ воздСйствия ЀОБ; 2) ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΠΈΡ‚ΡŒ, обусловлСно Π»ΠΈ воздСйствиС Π°Π³Π΅Π½Ρ‚Π°ΠΌΠΈ, Π²Ρ‹Π·Ρ‹Π²Π°ΡŽΡ‰ΠΈΠΌΠΈ ΠΎΡΡ‚Ρ€ΡƒΡŽ ΠΈ/ΠΈΠ»ΠΈ ΠΎΡ‚ΡΡ‚Π°Π²Π»Π΅Π½Π½ΡƒΡŽ Π½Π΅ΠΉΡ€ΠΎΡ‚ΠΎΠΊΡΠΈΡ‡Π½ΠΎΡΡ‚ΡŒ; 3) провСсти Π΄ΠΎΠ·ΠΈΠΌΠ΅Ρ‚Ρ€ΠΈΡŽ воздСйствия, которая даст Ρ†Π΅Π½Π½ΡƒΡŽ ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΡŽ для ΠΏΠΎΡΠ»Π΅Π΄ΡƒΡŽΡ‰Π΅ΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ отравлСния. Для подтвСрТдСния этой Π³ΠΈΠΏΠΎΡ‚Π΅Π·Ρ‹ ΠΌΡ‹ ΠΏΡ€ΠΎΠ²Π΅Π»ΠΈ исслСдованиС измСнСния активности АΠ₯Π­, НВЭ, Π‘Π₯Π­ ΠΈ карбоксиэстСразы (КЭ) ΠΊΡ€ΠΎΠ²ΠΈ ΠΌΡ‹ΡˆΠ΅ΠΉ Ρ‡Π΅Ρ€Π΅Π· 1 Ρ‡ послС Π²Π½ΡƒΡ‚Ρ€ΠΈΠ±Ρ€ΡŽΡˆΠΈΠ½Π½ΠΎΠ³ΠΎ ввСдСния Π²ΠΎΠ·Ρ€Π°ΡΡ‚Π°ΡŽΡ‰ΠΈΡ… Π΄ΠΎΠ· Ρ‚Ρ€Ρ‘Ρ… ЀОБ с Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌ эстСразным ΠΏΡ€ΠΎΡ„ΠΈΠ»Π΅ΠΌ: извСстного Π½Π΅ΠΉΡ€ΠΎΠΏΠ°Ρ‚ΠΈΡ‡Π½ΠΎΠ³ΠΎ соСдинСния O,O-Π΄ΠΈΠΏΡ€ΠΎΠΏΠΈΠ»-O-дихлорвинилфосфата (C3H 7O)2P(O)OCH=CCl2 (diPr-DClVP) Π² качСствС ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠ³ΠΎ соСдинСния ΠΈ Π΄Π²ΡƒΡ… ΠΌΠΎΠ΄Π΅Π»ΡŒΠ½Ρ‹Ρ… диалкилфосфатов – (C2H5O)2P(O)OCH(CF3)2 (diEt-PFP) ΠΈ (C4H9O)2P(O)OCH(CF3)2 (diBu-PFP). Π˜Π·ΠΌΠ΅Ρ€Π΅Π½ΠΈΠ΅ активности эстСраз ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ Π² ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π°Ρ… Π³Π΅ΠΌΠΎΠ»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΊΡ€ΠΎΠ²ΠΈ спСктрофотомСтричСским (АΠ₯Π­, Π‘Π₯Π­, КЭ) ΠΈ биосСнсорным (НВЭ) ΠΌΠ΅Ρ‚ΠΎΠ΄Π°ΠΌΠΈ. Анализ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… дозозависимостСй для ингибирования эстСраз ΠΊΡ€ΠΎΠ²ΠΈ ΠΏΠΎΠΊΠ°Π·Π°Π», Ρ‡Ρ‚ΠΎ Π‘Π₯Π­ ΠΈ КЭ ΡΠ²Π»ΡΡŽΡ‚ΡΡ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΌΠΈ Π±ΠΈΠΎΠΌΠ°Ρ€ΠΊΠ΅Ρ€Π°ΠΌΠΈ, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‰ΠΈΠΌΠΈ Π΄Π΅Ρ‚Π΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Π½ΠΈΠ·ΠΊΠΈΠ΅ Π΄ΠΎΠ·Ρ‹ ЀОБ токсикантов. ΠžΠ΄Π½ΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½ΠΎΠ΅ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ активности АΠ₯Π­ ΠΈ НВЭ Π² ΠΊΡ€ΠΎΠ²ΠΈ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ использовано для ΠΎΡ†Π΅Π½ΠΊΠΈ вСроятности воздСйствия острых ΠΈ/ΠΈΠ»ΠΈ отставлСнных нСйротоксикантов

    Π‘Π΅Π»Π΅ΠΊΡ‚ΠΈΠ²Π½Ρ‹Π΅ ΠΈΠ½Π³ΠΈΠ±ΠΈΡ‚ΠΎΡ€Ρ‹ карбоксилэстСразы для ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΡ эффСктивности, бСзопасности ΠΈ Ρ€Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ примСнСния лСкарствСнных ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΎΠ², содСрТащих слоТноэфирныС Π³Ρ€ΡƒΠΏΠΏΡ‹

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    In clinical practice, a large number of prodrugs and active drugs containing an ester, carbamate or amide moiety are used. Carboxylesterase (CaE, EC 3.1.1.1) is the key enzyme of hydrolytic metabolism of such drugs in the body, it largely determines their pharmacokinetics, bioavailability, efficacy and possible toxic effects. Using CaE selective inhibitors as components of combined drug therapy it is possible us to regulate the rate of hydrolytic transformation of ester-containing drugs and opens the possibility of their rational use. The development of effective and selective CaE inhibitors suitable for in vivo application is a new promising approach in medicinal chemistry and pharmacology that allows to improve the efficacy, bioavailability and reduce the side effects of ester-containing drugs.Π’ клиничСской ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅ примСняСтся большоС число пролСкарств ΠΈ Π°ΠΊΡ‚ΠΈΠ²Π½Ρ‹Ρ… лСкарствСнных срСдств, содСрТащих ΡΠ»ΠΎΠΆΠ½ΠΎΡΡ„ΠΈΡ€Π½ΡƒΡŽ, ΠΊΠ°Ρ€Π±Π°ΠΌΠ°Ρ‚Π½ΡƒΡŽ ΠΈΠ»ΠΈ Π°ΠΌΠΈΠ΄Π½ΡƒΡŽ Π³Ρ€ΡƒΠΏΠΏΠΈΡ€ΠΎΠ²ΠΊΡƒ. ΠšΠ»ΡŽΡ‡Π΅Π²Ρ‹ΠΌ Ρ„Π΅Ρ€ΠΌΠ΅Π½Ρ‚ΠΎΠΌ гидролитичСского ΠΌΠ΅Ρ‚Π°Π±ΠΎΠ»ΠΈΠ·ΠΌΠ° Ρ‚Π°ΠΊΠΈΡ… ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΎΠ² Π² ΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠ΅ ΡΠ²Π»ΡΡŽΡ‚ΡΡ карбоксилэстСразы (КЭ, КЀ 3.1.1.1), ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Π² Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ стСпСни ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΡΡŽΡ‚ ΠΈΡ… Ρ„Π°Ρ€ΠΌΠ°ΠΊΠΎΠΊΠΈΠ½Π΅Ρ‚ΠΈΠΊΡƒ, ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½Ρ‹Π΅ токсичСскиС эффСкты этих лСкарствСнных срСдств. ИспользованиС сСлСктивных ΠΈΠ½Π³ΠΈΠ±ΠΈΡ‚ΠΎΡ€ΠΎΠ² КЭ Π² качСствС ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠ² ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ лСкарствСнной Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ позволяСт Ρ€Π΅Π³ΡƒΠ»ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΡΠΊΠΎΡ€ΠΎΡΡ‚ΡŒ гидролитичСского прСвращСния лСкарствСнных ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΎΠ² со слоТноэфирной Π³Ρ€ΡƒΠΏΠΏΠΎΠΉ ΠΈ ΠΎΡ‚ΠΊΡ€Ρ‹Π²Π°Π΅Ρ‚ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ ΠΈΡ… Ρ€Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ использования. Π‘ΠΎΠ·Π΄Π°Π½ΠΈΠ΅ эффСктивных ΠΈ сСлСктивных ΠΈΠ½Π³ΠΈΠ±ΠΈΡ‚ΠΎΡ€ΠΎΠ² КЭ для примСнСния in vivo, являСтся Π½ΠΎΠ²Ρ‹ΠΌ пСрспСктивным ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ΠΎΠΌ Π² мСдицинской Ρ…ΠΈΠΌΠΈΠΈ ΠΈ Ρ„Π°Ρ€ΠΌΠ°ΠΊΠΎΠ»ΠΎΠ³ΠΈΠΈ, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‰ΠΈΠΌ ΠΏΠΎΠ²Ρ‹ΡΠΈΡ‚ΡŒ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ, Π±ΠΈΠΎΠ΄ΠΎΡΡ‚ΡƒΠΏΠ½ΠΎΡΡ‚ΡŒ ΠΈ ΡΠ½ΠΈΠ·ΠΈΡ‚ΡŒ ΠΏΠΎΠ±ΠΎΡ‡Π½Ρ‹Π΅ эффСкты многочислСнных лСкарствСнных срСдств, содСрТащих слоТноэфирныС Π³Ρ€ΡƒΠΏΠΏΠΈΡ€ΠΎΠ²ΠΊΠΈ

    ВлияниС Ρ€Π°Π·ΠΌΠ΅Ρ€Π° Ρ†ΠΈΠΊΠ»Π° ΠΈ структуры спСйсСра ΠΊΠΎΠ½ΡŠΡŽΠ³Π°Ρ‚ΠΎΠ² Ρ‚Π°ΠΊΡ€ΠΈΠ½Π° ΠΈ Π΅Π³ΠΎ Ρ†ΠΈΠΊΠ»ΠΎΠΏΠ΅Π½Ρ‚ΠΈΠ»ΡŒΠ½ΠΎΠ³ΠΎ Π³ΠΎΠΌΠΎΠ»ΠΎΠ³Π° с 5-(4-Ρ‚Ρ€ΠΈΡ„Ρ‚ΠΎΡ€ΠΌΠ΅Ρ‚ΠΈΠ»-Ρ„Π΅Π½ΠΈΠ»Π°ΠΌΠΈΠ½ΠΎ)-1,2,4-Ρ‚ΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»ΠΎΠΌ Π½Π° спСктр биологичСской активности

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    The conjugates of tacrine and its cyclopentyl analogue with 5-(4-trifluoromethyl-phenylamino)-1,2,4-thiadiazole, combined with two different spacers, pentylaminopropane and pentylaminopropene, were synthesized. Their esterase profile, the ability to displace propidium from the peripheral anionic site (PAS) of acetylcholinesterase (AChE) and antioxidant activity in the ABTS test were investigated. The compounds obtained effectively inhibit cholinesterases with a predominant effect on butyrylcholinesterase, displace propidium from the PAS of Electrophorus electricus AChE (EeAChE) and exhibit a high radical-scavenging capacity. It is shown that, depending on the spacer structure, particulary, the presence of a propenamine or propanamine fragment, the spectrum of biological activity of the conjugates changes.Π‘ΠΈΠ½Ρ‚Π΅Π·ΠΈΡ€ΠΎΠ²Π°Π½Ρ‹ ΠΊΠΎΠ½ΡŠΡŽΠ³Π°Ρ‚Ρ‹ Ρ‚Π°ΠΊΡ€ΠΈΠ½Π° ΠΈ Π΅Π³ΠΎ Ρ†ΠΈΠΊΠ»ΠΎΠΏΠ΅Π½Ρ‚ΠΈΠ»ΡŒΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΎΠ³Π° с 5-(4-Ρ‚Ρ€ΠΈΡ„Ρ‚ΠΎΡ€ΠΌΠ΅Ρ‚ΠΈΠ»-Ρ„Π΅Π½ΠΈΠ»Π°ΠΌΠΈΠ½ΠΎ)-1,2,4- Ρ‚ΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»ΠΎΠΌ, ΠΎΠ±ΡŠΠ΅Π΄ΠΈΠ½Ρ‘Π½Π½Ρ‹Π΅ двумя Ρ€Π°Π·Π½Ρ‹ΠΌΠΈ спСйсСрами – ΠΏΠ΅Π½Ρ‚ΠΈΠ»Π°ΠΌΠΈΠ½ΠΎΠΏΡ€ΠΎΠΏΠ°Π½ΠΎΠ²Ρ‹ΠΌ ΠΈ ΠΏΠ΅Π½Ρ‚ΠΈΠ»Π°ΠΌΠΈΠ½ΠΎΠΏΡ€ΠΎΠΏΠ΅Π½ΠΎΠ²Ρ‹ΠΌ, исслСдован ΠΈΡ… эстСразный ΠΏΡ€ΠΎΡ„ΠΈΠ»ΡŒ, ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡ‚ΡŒ Π²Ρ‹Ρ‚Π΅ΡΠ½ΡΡ‚ΡŒ ΠΏΡ€ΠΎΠΏΠΈΠ΄ΠΈΠΉ ΠΈΠ· пСрифСричСского Π°Π½ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ сайта (ПАБ) ацСтилхолинэстСразы (АΠ₯Π­) ΠΈ антиоксидантная Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Π² тСстС АБВБ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ соСдинСния эффСктивно ΠΈΠ½Π³ΠΈΠ±ΠΈΡ€ΡƒΡŽΡ‚ холинэстСразы с прСимущСствСнным дСйствиСм Π½Π° бутирилхолинэстСразу, Π²Ρ‹Ρ‚Π΅ΡΠ½ΡΡŽΡ‚ ΠΏΡ€ΠΎΠΏΠΈΠ΄ΠΈΠΉ ΠΈΠ· ПАБ АΠ₯Π­ ΠΈΠ· Electrophorus electricus (EeАΠ₯Π­) ΠΈ ΠΎΠ±Π»Π°Π΄Π°ΡŽΡ‚ высокой Ρ€Π°Π΄ΠΈΠΊΠ°Π»-ΡΠ²ΡΠ·Ρ‹Π²Π°ΡŽΡ‰Π΅ΠΉ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡ‚ΡŒΡŽ. Показано, Ρ‡Ρ‚ΠΎ Π² зависимости ΠΎΡ‚ строСния спСйсСра, Π° ΠΈΠΌΠ΅Π½Π½ΠΎ наличия Π² Π½Π΅ΠΌ ΠΏΡ€ΠΎΠΏΠ΅Π½Π°ΠΌΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎ ΠΈΠ»ΠΈ ΠΏΡ€ΠΎΠΏΠ°Π½Π°ΠΌΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎ Ρ„Ρ€Π°Π³ΠΌΠ΅Π½Ρ‚Π°, мСняСтся спСктр биологичСской активности ΠΊΠΎΠ½ΡŠΡŽΠ³Π°Ρ‚ΠΎΠ²

    Synthesis, molecular docking, and biological activity of 2-vinyl chromones: Toward selective butyrylcholinesterase inhibitors for potential Alzheimer's disease therapeutics

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    We investigated the biological activity of a series of substituted chromeno[3,2-c]pyridines, including compounds previously synthesized by our group and novel compounds whose syntheses are reported here. Tandem transformation of their tetrahydropyridine ring under the action of activated alkynes yielding 2-vinylsubstituted chromones was used to prepare nitrogen-containing derivatives of a biologically active chromone system. The inhibitory activity of these chromone derivatives against acetylcholinesterase (AChE), butyrylcholinesterase (BChE) and carboxylesterase (CaE) was investigated using the methods of enzyme kinetics and molecular docking. Antioxidant (antiradical) activity of the compounds was assessed in the ABTS assay. The results demonstrated that a subset of the studied chromone derivatives selectively inhibit BChE but do not exhibit antiradical activity. In addition, the results of molecular docking effectively explained the observed features in the efficacy, selectivity, and mechanism of BChE inhibition by the chromone derivatives. Β© 2018 Elsevier Lt

    Synthesis, molecular docking, and biological activity of 2-vinyl chromones: Toward selective butyrylcholinesterase inhibitors for potential Alzheimer's disease therapeutics

    Full text link
    We investigated the biological activity of a series of substituted chromeno[3,2-c]pyridines, including compounds previously synthesized by our group and novel compounds whose syntheses are reported here. Tandem transformation of their tetrahydropyridine ring under the action of activated alkynes yielding 2-vinylsubstituted chromones was used to prepare nitrogen-containing derivatives of a biologically active chromone system. The inhibitory activity of these chromone derivatives against acetylcholinesterase (AChE), butyrylcholinesterase (BChE) and carboxylesterase (CaE) was investigated using the methods of enzyme kinetics and molecular docking. Antioxidant (antiradical) activity of the compounds was assessed in the ABTS assay. The results demonstrated that a subset of the studied chromone derivatives selectively inhibit BChE but do not exhibit antiradical activity. In addition, the results of molecular docking effectively explained the observed features in the efficacy, selectivity, and mechanism of BChE inhibition by the chromone derivatives. Β© 2018 Elsevier Lt
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